BIG DUKE VS BIG BRODIE

Old 05-13-2008, 10:17 PM
  #11  
michael1
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Default pb1802

I have a brand new pair of pb1802 heads, what needs to be done to make these work on a 632 with 2 1150 dominators with 10.5-1 compression in a 3400 drag radial car. Thanks
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Old 05-14-2008, 04:50 AM
  #12  
cboggs
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Default Re: pb1802

Originally Posted by michael1
I have a brand new pair of pb1802 heads, what needs to be done to make these work on a 632 with 2 1150 dominators with 10.5-1 compression in a 3400 drag radial car. Thanks
why is the compression so low?

if the 1802's are just out of the box, .. some porting and a proper valve job
will wake them up.

Curtis
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Old 05-14-2008, 06:02 AM
  #13  
michael1
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Default pb1802

I'm building it for the pump gas drags, will this combo work? Do you think this is to much head? How much would you charge, they are bare heads.
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Old 05-14-2008, 05:44 PM
  #14  
cboggs
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Default Re: pb1802

Originally Posted by michael1
I'm building it for the pump gas drags, will this combo work? Do you think this is to much head? How much would you charge, they are bare heads.
it'll work for the pump gas drags, .. but I'd rather use an oval port
head like the Brodix 1803 or the new RFD / Edelbrock Big Victor.

Big heads and sheet metal intakes with two carbs aren't very
good on pump gas, .. it'll take some heavy engine building skills to make it work.

Curtis
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Old 05-14-2008, 07:48 PM
  #15  
michael1
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Default pb1802

I had to go with these heads bacause I have had the intake and carbs for a while now so I figured it would be cheaper to just use it. I only need to get about 950-1050 hp on motor to compete. I also plan on putting nos on it. If I send you the heads how much would you charge me to make them work including all parts. I will also send you the intake so you can port match it too. Thanks
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Old 05-16-2008, 04:40 AM
  #16  
Pwmax
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My advice, would be to skip the twin dominators, and sheet metal manifold, for that combo. YOu will be WAAAY more happy with a single carb on the new Edelbrock Spread port manifold. We had a guy that bought a used sheet metal intake, that physicaly bolted to some Big Chief heads, on a 598 I did over the winter, and, the single carb, on the Edelbrock intake made more power!!. Old "mystery" sheet metal intakes, built by who knows, don;t gaurentee more power because its made from shert metal, and looks really trick. Typicaly, they are made to "tune" a narrow window of a power band, and will look bad if that window isn;t utilized, because the engine wasn;t run up that high in RPM.

Besides, 2 dominators for the cruise, could be a TOTAL nightmare. But, 1000hp, is doable on 92 with the right combo

Frank
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www.get-ap.com
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Old 05-16-2008, 10:50 AM
  #17  
michael1
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Default pb1802

It is a Dart spread port tunnel ram intake and Dart said for my specific combo they think that this intake would work better then a sheet metal intake. Do you think this is true? Also the intake has never been ported so the runner volume should not be to much, does that sound right?
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Old 05-16-2008, 06:01 PM
  #18  
TheRabbit
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Originally Posted by cboggs

We have to consider air speed BEFORE the mass airflow volume or CFM.
If you don't have proper airspeeds you will never fill the cylinder over 100%

Exit speed of the intake charge out of the valve and into the chamber is one of
THE most important design issues to making good power.
Slow, sluggish air speed and power drops off fast.

Curtis
This also leads to the discussion of size and type of headers / collectors???
Curtis where do you decide to go up to 2 1/2" and/ or 5" collectors?
and what effect does length of tubes have??
Maybe you should write a book! I"LL BE GLAD TO PUBLISH IT FOR YOU!! :wink: :!:
THANX again!!
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Old 05-19-2008, 04:52 AM
  #19  
cboggs
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Originally Posted by TheRabbit
Maybe you should write a book! I"LL BE GLAD TO PUBLISH IT FOR YOU!! :wink: :!:
THANX again!!
I'll consider writing a book, .. what type of publishing deal are we talking?

C
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Old 09-12-2008, 11:57 AM
  #20  
supergass
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Default BBC -3 Oval CNC

Curtis,
I just bought a set of the 365cc oval Brodix heads for a 565. Dod you like these heads over a head like the 355 cnc Dart?? Can I angle mill these down to 110cc chambers without sticking the valve out ?? I havent seen mine yet.

Chris Carlile
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